Core landscape technology launched high voltage 350mA, adjustable LED linear driver

Days ago, Wuhan Optics Valley Chinese - analog, mixed signal devices supplier core view technology promotes the high high brightness linear LED driver chip AT8800. AT8800 current regulator can operate in the 6.5V to 40V input voltage range, providing up to 350mA of the total current to drive one or more columns of high brightness LED. The output current of the AT8800 is adjusted by an external current sense resistor connected in series with the led. Enable input to achieve a wide range of "pulse" brightness control. Waveform shaping circuit reduces EMI. The differential current detection input improves the noise rejection capability. AT8800 is ideal for applications requiring high voltage input and can withstand up to 40V of the vehicle load. The board adjustment element greatly reduces the number of external components, and provides an output current accuracy of + 3.5%. The device also provides 5V regulator output as well as short-circuit protection and thermal protection characteristics. Through an external transistor, the AT8800 can be extended to drive LED currents up to a few amperes.

The main characteristics of

+6.5V to +40V operating voltage range

Adjustable output current (35mA to 350mA)

Through an external transistor, the output current can be extended up to several Amps

Output current accuracy 3.5%

Built in adjusting element, low dropout (typ. 0.5V)

Output short circuit protection

+5V regulated output, 4mA source current capacity thermal shutdown

Differential LED current detection

High voltage enable pin to achieve brightness control interface

Low shutdown current (typ. 12 A)

204mV low current detection benchmark to reduce power consumption

Waveform shaping circuit makes the pulse current has a smooth edge, thus reducing the PWM brightness control of EMI

The use of small size, thermal enhancement, 5mm x 5mm, 16 pin TQFN package and ESOP8 package in

-40 C to +125 DEG C operating temperature range

application

Inside the car: maps, gated car room lights, spotlights

Automotive exterior: taillights and CHMSL

Traffic warning lamp

Navigation and fleet management

General lighting equipment

Signs, gas stations, Lighthouse

Pin definition and description

Typical application circuit

Functional diagram

About Wuhan core technology Co., Ltd. (AnalogTek)

The core view technology (AnalogTek) is headquartered in Wuhan, Optics Valley China, design and marketing of analog and mixed signal chip products, product line includes real-time calendar clock RTC, white light and color LED driver, DC/DC converter, LDO regulator, power monitor, bus extender, LCD controller, LNB control chip such as satellite receiver. Chip technology is often used in industrial control and consumer electronics markets. Typical applications include LCM module, LED lighting, meter, MP3, handheld devices, satellite receiver LNB, navigation systems, set-top boxes and network routers, etc..